Pith Number

pith:WRPDDGTI

pith:2021:WRPDDGTI5MI6JFVMGYXYHSWCXR

not attested not anchored not stored refs pending

Combining Orthology and Xenology Data in a Common Phylogenetic Tree

David Schaller, Marc Hellmuth, Mira Michel, Nikolai N. N{\o}jgaard, Peter F. Stadler

arxiv:2107.01893 v1 · 2021-07-05 · math.CO · cs.DM · q-bio.PE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WRPDDGTI5MI6JFVMGYXYHSWCXR}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T02:55:01.644375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b45e319a68eb11e496ac362f83cac2bc5cb97359949025cd754b7218117467a3

Aliases

arxiv: 2107.01893 · arxiv_version: 2107.01893v1 · doi: 10.48550/arxiv.2107.01893 · pith_short_12: WRPDDGTI5MI6 · pith_short_16: WRPDDGTI5MI6JFVM · pith_short_8: WRPDDGTI

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/WRPDDGTI5MI6JFVMGYXYHSWCXR \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: b45e319a68eb11e496ac362f83cac2bc5cb97359949025cd754b7218117467a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee84e61fbf5cdf67d188d4612817eb9ff7120fc9b27745510f1f63fd81af2ed8",
    "cross_cats_sorted": [
      "cs.DM",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2021-07-05T09:33:54Z",
    "title_canon_sha256": "5168782c397def6cab455441d3f1a958577a07f87472eb6eeef73aabf094aae2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.01893",
    "kind": "arxiv",
    "version": 1
  }
}